Cashback Math: Gross vs. Net
Every credit card review tells you the earning rate. Almost none of them tell you what you'll actually take home. The gap between gross rewards (the number on the marketing page) and net rewards (what you deposit) is where most people's expectations break.
This page does the math that card reviews skip: annual fee subtracted, category caps applied, and the welcome-bonus bump stripped out so you see what the card earns in a normal year — year two and beyond.
The year-one illusion
Welcome bonuses dominate year-one value. The Chase Freedom Unlimited's $250 bonus after $500 in spending is 50% back on that first $500. That's spectacular — and temporary. In year two, that same $500 earns $7.50 (at 1.5%). Every card review that trumpets "up to X in first-year value" is including a bonus you can only earn once.
That 36% drop isn't a problem — $450/year on a no-fee card is still excellent. But if you chose the card expecting $700/year indefinitely, you'll feel like the card got worse when it's performing exactly as designed.
Category caps in practice
Several of the best cards cap their elevated earning rates at a spending threshold. Above that threshold, you earn the base rate — typically 1%. This means the effective earning rate on your total spending in that category is lower than the headline rate.
The Citi Custom Cash is still a strong card — but if you spend well over $500/month in your top category, the effective rate erodes. The same logic applies to Discover it's $1,500/quarter cap and the Blue Cash Preferred's $6,000/year supermarket cap.
At $700/month in groceries, the Blue Cash Preferred's lead over the no-fee Savor shrinks to $37/year. If your grocery spending keeps climbing, the gap narrows further because every dollar above $6,000 earns only 1% on the BCP vs. 3% on the Savor.
The net earnings cheat sheet
Here's what several popular cards actually net per year on realistic spending of $2,500/month, after fees and caps, in year two (no welcome bonus):
| Card | Annual fee | Gross rewards | Net rewards |
|---|---|---|---|
| Wells Fargo Active Cash | $0 | $600 | $600 |
| Citi Double Cash | $0 | $600 | $600 |
| Chase Freedom Unlimited | $0 | $450-$630* | $450-$630 |
| Citi Custom Cash | $0 | $300-$480* | $300-$480 |
| Chase Sapphire Preferred | $95 | $500-$900* | $355-$755 |
| Blue Cash Preferred | $95 | $360-$550* | $265-$455 |
*Range depends on spending category mix. Lower number assumes mostly non-bonus spending. Higher number assumes heavy dining/travel/grocery concentration.
The pattern is clear: no-fee flat-rate cards produce the most predictable returns. Category cards and fee cards produce higher returns only when spending concentrates in their bonus categories. If your spending is scattered, flat-rate wins every time.
The honest takeaway
The best card for you in year two might not be the best card for you in year one. Welcome bonuses are one-time events. Category caps mean your effective rate gets worse as you spend more. Annual fees are permanent costs that never decrease. Run the math on your actual spending in a normal month — not your best month, not the month you bought a couch — and pick the card that wins that calculation.